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Finding the Fourth Proportional to 104,487.06, 155,629.59 and 102,300.06

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Solution

The fourth proportional to 104,487.06, 155,629.59 and 102,300.06 is: 152,372.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,487.06 : 155,629.59 = 102,300.06 : x
  2. Step 2: Convert to fraction form
    104,487.06/155,629.59 = 102,300.06/x
  3. Step 3: Cross multiply
    104,487.06x = 155,629.59 × 102,300.06
  4. Step 4: Simplify right side
    104,487.06x = 15,920,916,394.78
  5. Step 5: Solve for x
    x = 15,920,916,394.78/104,487.06
  6. Step 6: Final answer
    x = 152,372.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.